Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode
- Autores
- Bauer, Eduardo; Garbarino, Gaston Leonel; Rodríguez Peña, Carlos Andrés
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The nonmesonic weak decay of Λ hypernuclei is studied within a microscopic diagrammatic approach which is extended to include the three-nucleon induced mechanism. We adopt a nuclear matter formalism which, through the local density approximation, allows us to model finite hypernuclei, a one-meson-exchange weak transition potential and a Bonn nucleon–nucleon strong potential. One-, two- and three-nucleon induced weak decay rates are predicted for CΛ12 by including ground state correlations up to second order in the nucleon–nucleon potential and the recoil of the residual nucleus. Three-nucleon stimulated decays, ΛNNN→nNNN (N=n or p), are considered here for the first time. The obtained decay rates compare well with the latest KEK and FINUDA data. The three-nucleon induced rate turns out to be dominated by nnp- and npp-induced decays, it amounts to ∼7% of the total nonmesonic rate and it is ∼1/2 of the neutron-induced decay rate. The reduction effect of the nuclear recoil is particularly relevant for the three-nucleon induced rates (∼15%), less important for the two-nucleon induced rates (∼4%) and negligible for the one-nucleon induced rates. Given the non-negligible size of the three-nucleon induced contribution and consequently its importance in the precise determination of the complete set of decay rates, new measurements and/or experimental analysis are encouraged.
Fil: Bauer, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Garbarino, Gaston Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. IIS G. Peano; Italia
Fil: Rodríguez Peña, Carlos Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina - Materia
-
Nonmesonic Weak Decay
Λ Hypernuclei - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/50006
Ver los metadatos del registro completo
id |
CONICETDig_40e21cd6cd63211971948ae2b40a4a8f |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/50006 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced modeBauer, EduardoGarbarino, Gaston LeonelRodríguez Peña, Carlos AndrésNonmesonic Weak DecayΛ Hypernucleihttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The nonmesonic weak decay of Λ hypernuclei is studied within a microscopic diagrammatic approach which is extended to include the three-nucleon induced mechanism. We adopt a nuclear matter formalism which, through the local density approximation, allows us to model finite hypernuclei, a one-meson-exchange weak transition potential and a Bonn nucleon–nucleon strong potential. One-, two- and three-nucleon induced weak decay rates are predicted for CΛ12 by including ground state correlations up to second order in the nucleon–nucleon potential and the recoil of the residual nucleus. Three-nucleon stimulated decays, ΛNNN→nNNN (N=n or p), are considered here for the first time. The obtained decay rates compare well with the latest KEK and FINUDA data. The three-nucleon induced rate turns out to be dominated by nnp- and npp-induced decays, it amounts to ∼7% of the total nonmesonic rate and it is ∼1/2 of the neutron-induced decay rate. The reduction effect of the nuclear recoil is particularly relevant for the three-nucleon induced rates (∼15%), less important for the two-nucleon induced rates (∼4%) and negligible for the one-nucleon induced rates. Given the non-negligible size of the three-nucleon induced contribution and consequently its importance in the precise determination of the complete set of decay rates, new measurements and/or experimental analysis are encouraged.Fil: Bauer, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Garbarino, Gaston Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. IIS G. Peano; ItaliaFil: Rodríguez Peña, Carlos Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaElsevier Science2017-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/50006Bauer, Eduardo; Garbarino, Gaston Leonel; Rodríguez Peña, Carlos Andrés; Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode; Elsevier Science; Physics Letters B; 766; 3-2017; 144-1480370-2693CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2017.01.010info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0370269317300175info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:02:42Zoai:ri.conicet.gov.ar:11336/50006instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:02:43.195CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode |
title |
Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode |
spellingShingle |
Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode Bauer, Eduardo Nonmesonic Weak Decay Λ Hypernuclei |
title_short |
Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode |
title_full |
Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode |
title_fullStr |
Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode |
title_full_unstemmed |
Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode |
title_sort |
Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode |
dc.creator.none.fl_str_mv |
Bauer, Eduardo Garbarino, Gaston Leonel Rodríguez Peña, Carlos Andrés |
author |
Bauer, Eduardo |
author_facet |
Bauer, Eduardo Garbarino, Gaston Leonel Rodríguez Peña, Carlos Andrés |
author_role |
author |
author2 |
Garbarino, Gaston Leonel Rodríguez Peña, Carlos Andrés |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Nonmesonic Weak Decay Λ Hypernuclei |
topic |
Nonmesonic Weak Decay Λ Hypernuclei |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The nonmesonic weak decay of Λ hypernuclei is studied within a microscopic diagrammatic approach which is extended to include the three-nucleon induced mechanism. We adopt a nuclear matter formalism which, through the local density approximation, allows us to model finite hypernuclei, a one-meson-exchange weak transition potential and a Bonn nucleon–nucleon strong potential. One-, two- and three-nucleon induced weak decay rates are predicted for CΛ12 by including ground state correlations up to second order in the nucleon–nucleon potential and the recoil of the residual nucleus. Three-nucleon stimulated decays, ΛNNN→nNNN (N=n or p), are considered here for the first time. The obtained decay rates compare well with the latest KEK and FINUDA data. The three-nucleon induced rate turns out to be dominated by nnp- and npp-induced decays, it amounts to ∼7% of the total nonmesonic rate and it is ∼1/2 of the neutron-induced decay rate. The reduction effect of the nuclear recoil is particularly relevant for the three-nucleon induced rates (∼15%), less important for the two-nucleon induced rates (∼4%) and negligible for the one-nucleon induced rates. Given the non-negligible size of the three-nucleon induced contribution and consequently its importance in the precise determination of the complete set of decay rates, new measurements and/or experimental analysis are encouraged. Fil: Bauer, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina Fil: Garbarino, Gaston Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. IIS G. Peano; Italia Fil: Rodríguez Peña, Carlos Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina |
description |
The nonmesonic weak decay of Λ hypernuclei is studied within a microscopic diagrammatic approach which is extended to include the three-nucleon induced mechanism. We adopt a nuclear matter formalism which, through the local density approximation, allows us to model finite hypernuclei, a one-meson-exchange weak transition potential and a Bonn nucleon–nucleon strong potential. One-, two- and three-nucleon induced weak decay rates are predicted for CΛ12 by including ground state correlations up to second order in the nucleon–nucleon potential and the recoil of the residual nucleus. Three-nucleon stimulated decays, ΛNNN→nNNN (N=n or p), are considered here for the first time. The obtained decay rates compare well with the latest KEK and FINUDA data. The three-nucleon induced rate turns out to be dominated by nnp- and npp-induced decays, it amounts to ∼7% of the total nonmesonic rate and it is ∼1/2 of the neutron-induced decay rate. The reduction effect of the nuclear recoil is particularly relevant for the three-nucleon induced rates (∼15%), less important for the two-nucleon induced rates (∼4%) and negligible for the one-nucleon induced rates. Given the non-negligible size of the three-nucleon induced contribution and consequently its importance in the precise determination of the complete set of decay rates, new measurements and/or experimental analysis are encouraged. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-03 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/50006 Bauer, Eduardo; Garbarino, Gaston Leonel; Rodríguez Peña, Carlos Andrés; Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode; Elsevier Science; Physics Letters B; 766; 3-2017; 144-148 0370-2693 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/50006 |
identifier_str_mv |
Bauer, Eduardo; Garbarino, Gaston Leonel; Rodríguez Peña, Carlos Andrés; Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode; Elsevier Science; Physics Letters B; 766; 3-2017; 144-148 0370-2693 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2017.01.010 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0370269317300175 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science |
publisher.none.fl_str_mv |
Elsevier Science |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
_version_ |
1844613834490249216 |
score |
13.070432 |